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2. ICD-10 Codes
3. Chapter - O00-O9A
4. Section - O94-O9A
5. Category - O99
6. O99.119

O99.119 - Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, unspecified trimester

• Applicable to Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, unspecified trimester
• The 2025 edition of ICD10-CM O99.119 became effective on October 1, 2024.
• This is the American ICD10-CM version of O99.119 - other international versions of ICD10 O99.119 may differ.
• O99.119 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The following codes above O99.119 contain annotation back-references that may be applicable to O99.119:

• Chapter: O00-O9A - Pregnancy, childbirth and the puerperium
• Section: O94-O9A - Other obstetric conditions, not elsewhere classified
• Category: O99 - Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

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Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.